Home / 81,491.13-122,234.94-49,477.77

Finding the Fourth Proportional to 81,491.13, 122,234.94 and 49,477.77

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Solution

The fourth proportional to 81,491.13, 122,234.94 and 49,477.77 is: 74,215.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,491.13 : 122,234.94 = 49,477.77 : x
  2. Step 2: Convert to fraction form
    81,491.13/122,234.94 = 49,477.77/x
  3. Step 3: Cross multiply
    81,491.13x = 122,234.94 × 49,477.77
  4. Step 4: Simplify right side
    81,491.13x = 6,047,912,247.28
  5. Step 5: Solve for x
    x = 6,047,912,247.28/81,491.13
  6. Step 6: Final answer
    x = 74,215.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.